衍文

wèi bǎo zhèng zhè bù zhù zuò de zhì liàng biān zhě duì wén zhāng zhōng de tuō zì lòu zì yǐ jí yǎn wén jìn xíng le bì yào de jiào zhèng

为保证这部著作的质量，编者对文章中的脱字、漏字以及衍文进行了必要的校正。

The complier of it has revised the missing words, carets, and derivatives in order to maintain its quality.